View full sizeAP PhotoFormer CMU linebacker Frank Zombo is anxious to return to the Green Bay Packers lineup after sitting out with a deep hamstring injury.

MOUNT PLEASANT, MI — Former Central Michigan University star Frank Zombo has spent the 2012 NFL season on the sidelines, recovering from a deep hamstring injury.

But the Green Bay Packers linebacker may see his first action Sunday against Arizona.

Zombo has been practicing for three weeks, the limit before the Packers have to make a decision to activate him, release him or put him on the season-long injured reserve list.

According to greenbaypressgazette.com, Green Bay coach Mike McCarthy planned to work Zombo into the game plan for Arizona, if he is activated.

greenbaypressgazette.com: “It felt good out to run out and practice again instead of just standing there,” Zombo said. “I felt, in a way, that I was earning my paycheck again. It felt good in the sense of being part of the team again. It was definitely nice.”